Nmap scan report for ns1.odoo.com (51.91.164.65)
Host is up (0.15s latency).
Not shown: 995 filtered tcp ports (no-response)
PORT    STATE  SERVICE
22/tcp  open   ssh
25/tcp  closed smtp
53/tcp  open   domain
80/tcp  open   http
443/tcp open   https

Nmap done: 1 IP address (1 host up) scanned in 10.95 seconds